Wiring A Detector (Gdp2 Or Gdp4 Control Panel); Wiring Your Detector (Merlin 'S' Control Panels); Audible Alarm Switch; Factory Set Condition - CGS Merlin 'S' Range Installation, Fonctionnement Et Entretien

Installation, Operation & Maintenance Manual

Wiring a Detector (GDP2 or GDP4 Control Panel)

Power is supplied to a detector via the GDP terminal [+ / -] and using the panel [GAS DETECTION ZONE] terminal.
If you are using a GDP panel you will need to use the detector [C/L] terminal as an alarm relay.

Wiring your Detector (Merlin 'S' Control Panels)

Power is supplied to a detector via the GDP terminal [+ / -] and using the 'S' panel [GAS DETECTOR] terminal [+ / -].
For a BMS alarm relay use [COM] and [NC] on the detector and the [open/close] switch terminal on the panel.
BMS are volt free connections.

Audible Alarm Switch

There is a switch on the detector board identified as [Buzzer On/Off].
The detector can be configured to have an audible alarm or not when gas levels reach the alarm
set points. The alarm will continuously sound – there are no provisions to silence the alarm, gas
levels must drop to a safe value for the alarm to stop.

Factory Set Condition

Buzzer On/Off Switch
Chain Termination Resistor
Detector ID Switches
Detectors are shipped pre-calibrated and configured.
IOM Iss: 4 11-21
ON
OFF
ID 1
BMS terminals can be used in conjunction with
other external relays that affect other devices
and controls such as purge fans or audible
alarms etc.
A relay will change state when in alarm or
when gas is detected.
BMS terminals can be used in conjunction with
other external relays that affect other devices
and controls such as purge fans and audible
alarms etc.
Merlin Detector-TFT
8